senseFly is a Parrot company. Copyright © senseFly 2015. All rights reserved. senseFly Ltd., 1033 Cheseaux-Lausanne, Switzerland. 1 When Turkish State Railways needed to conduct a full land survey of a proposed high-speed rail route — due to connect the capital Ankara with Izmir — its engineering department divided the route into three roughly equal sections. Survey contracts were then awarded to three separate providers in order to minimise

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